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Expressions for Expectations and Variances of Cycle Times for Yard Cranes by Considering Dependencies among Time Elements
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 Title & Authors
Expressions for Expectations and Variances of Cycle Times for Yard Cranes by Considering Dependencies among Time Elements
Lee, Byung-Kwon; Kim, Kap-Hwan; Yun, Won-Young;
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During the design process of a terminal, the handling capacity of a container yard needs to be evaluated in advance. This study suggests formulas for estimating the expectations and the variances of cycle times for various types of operations of a yard crane. Statistical analysis is used to estimate the expectations and variances. The main focus of this study is to show the impact of interdependencies among handling time elements on the expectation and variance of the cycle times; these interdependencies have not been considered in previous studies. Numerical experiments are done for evaluating the difference in the variance of cycle times and the waiting of trucks between the cases with and without the consideration of interdependencies.
Container Terminal;Cycle Time;Yard Crane;Statistical Analysis;
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